apocarp

例句：

1. 1.The apocarp of the apple is soft and edible.
   苹果的果皮是软的且可食用。
2. 2.The apocarp of the peach is thin and translucent.
   桃子的果皮薄且透明。
3. 3.The apocarp of the orange is thick and tough.
   橙子的果皮厚且坚韧。